Window-ventilator.



No. 471929." PATENTED MAR. 19,1907. I

E. R. FORESTER,

WINDOW VENTILATOR. APPLICATION FILED JAN. 22. 1906.

M nun-mun:-

T010, whom, 11am ooncer m- WEED or I EDWARD RI EOERSTEB;

"or emc eo; 'I LLINois vilmla owfvlvTlLAi'oa jnoieneaa 1"s eeificaibnpf'Quagmire P tented March. 19,' 19o7.

Application filaa January jz aiaoa; Serial Hi -090.;

Be it known that I, Enw Rn-R; Fonns'ranf a citizen of the United States, residing at Chi. cago, eounty of Cook, State of Illinois', have' invented aioertain' new and -'usefj1il Irn rovement in Window-Ventilators; and I eelare v the follow' to bea full, clear, andex'act de-" soription o the same, .such aswill enable others skilled in the-art to which it pertains to make and ,use the same, reference being had to the/accompany g -drawingspwhich form a-partof this speeificatitmiv I My -inv ention'relates in general to ventilators, and more particularly to ventilators} adapted to be secured to-the lower rail of'a I window-sash.

It ".s desirable that ventilators," should be provided with screens to prevent the passage A over an; opening through a wihdoW-ssish'withair. through an o ening--in a-window+ sas of dusttheretliroughand alsogthat they should: be capable of being ,readilyattaoh ed' -out necess t ating the sash beingeut away to such an extent as to weaken the same.

'The primary object ofymy' invention is to provide a ventilator to control the su l which will free t e air suppliedifrom dust and.

- other foreign matter,-

' A furtherobject of my inventionis to .pro-

vide a ventilator which will be simple in con-- struction,eornp aratively hiexpensive in manufacture, and eflicient in use.

The emhodiment'of my invention herein disclosed may be generallydescribed as'com-j prising a face-plate having holes therethrough and adapted-t9- he secured over anopening through a window-sash; a plate in sliding errgagement with the ,i'aee.-p te,';having holes adapted to-regis-ter with--. those of the face? plate {flanges projecting rearwardly from :the I 7 ends of the face-platean'd having vertical roov'es therein a screen supported at its ends in said grooves; a bottom flange projecting "screen, towhiohair -passes from a restricted y from theZfaoe-plate, u ponwhich the screen-is supported, the end flanges being of suchwidth as to form an air-chamber back of the passage through the sash.-

My invention will be morefullv'described hereinafter witl i' reference to the acc'orn' a-' nymg drawing, in which the same is 11 ustrated as embodied ina eon'vcnient and practical form, and.1n-wh1ch Figure I is an elevational view; Fig. 2,"a

central horizontal sectional view on line 2 2.

line 3- 3, Fig; 1.

designate a Parts the several fig- "ures of the drawing, 1

Reference character A indicates a portion' 1 andFigQ-i, a' vertical sectional viewon J'Ihe samereference characters are used to of the lower rail of" a window- 's as l1- 'or' other frame throughwhieh airis to'be supplied-1 plate adapted 'to be'seeured to the window-f sash'b'y. any suitable means-Fas, for instance, by screws b, extending. through holes in the.

rear of theface-plate; Theplate C 'is-pr0.-' vided withiholes 0 which--mav be ,hrought into registerlw ith the holesbi in the-faee-i the late'Q relativelytotheface plate.

' T eface-plate is provided with rearwardly extending sulefwings or flanges D and "11 ,85 which are. provided with vertieal grooves in; their inner surfaces. -A bottomilange D is also formedon the face-plate, as clearly shown in Fig.

J Eindieates moi-eatthe meshes a which Reference character B indicates a facei plate or may. be moved out'of register with such-holes 'by-reeiprocating the-plate Oby meansof the-biit-toncg ."lhe'shanlrgf the g8o g a button oiextendsthrougha slot in'the face plate-tofpermit .a movement thereof to slide permit thepassa geofair therethroug'h, but

obstruet the passagc of dusty and other foreign.

matter. Ther'sereen 'may be conveniently-f ;provid d;with a. surrounding frame" d. The' screen is adaBtedZtoslide within the grooves 9 in the wings and Dandto rest at its lower edge onthe flange DJ The side wings D and D? project a slight distance to'the rear of'the screen, therebyform-in anairspace at the rear of the screen,

" with w 'eh communicates a passage A, :ex'-

tending thro h the sash.

'The facerplate B may,'if desired,'b -'e pie I OC .videdwith al finger-lift B to facilitate the raisin and loweri of the window, thereby;

containing in one In-a plying my'inventionto the window- I'o5 viee a ventilator and a finger-11ft. I v

sashlt e'latter isout outsufiioientlyto ret ceive-theerid- D and D of the frame.

pro

I mid permit the surrounding portion of the .of any desired size and may extend in any direction, preferably extending downwardly, as shown inFi .i 3, to prevent the rain from The operation of my invention will be "readily understood from the foregoing de-' lated by moving the plate relativelyto the the screen a restricted passage-way through such a size-as to weaken the same. 1

position over a passa e-wa "in' a window-'- i fair inany desired volume free-from D otherforeignmatter, Itwillbealsoobservddt' what I c aim as new, and desire to'secure by -Letters Patent, is

- over said air-passage comp isin a face-plate g andf a screen reair tothe chamber formed in-the' sash at the- .thereby'permitting the ventilator to: e freed fromaccnmulateddust fromtirne to time bysimpl removing-the screws vvhic'h'secure the venti ator tio'tlie window-sash and then d e-Q H tachingithe ventilator. After thescreen has been detached and the accumulated dust re' l ositio nd theventllator again secured to theWindow-sash.

face-plate'to closely en'gage the outer surface of the sash. A passage, such as A, cnt entirely through the windovgfisa'sh to supply rear ofthe screen; The passage A may be passing thro'ug the ventilator.

scription. The supply of air may be reguface-plate B, thereby bringing the'holes such plates into registerto any' desired extent, or entirely out of register. Y

' By providing the air-space at therear-of the sash will only-be necessary, thereby avoiding a passage-way througlithe sash From the foregoing description-it vvill' be observed thatjI 'have invented an improved ventilator which maybe readily. secured in sash or other frame'a'n wliic will supgly' the .that' the screen is readily removable from the wings of the ventilator which-sup o'rtit,

movedthe screen may beagain inserted in Havin now fully described my invention,

'1; The combination with awindoiv-sa sh 'havin achamber therein and an air-passage theret ough, of a ventilator removably '86} z cured in said. chamber vof the.v window-sash jectin .PQ I jugs through-theface-f late. net or Witnesses having holes therethron movably supported upon said plate through 50 which the air passes to. said holes.

3 2.' The combination with a window-sash 'havin a chamber therein and, an air passage therethrough, of a ventilator removably secored-"in ,said chamber ofthe window-sash 5-5. 'over.said air passage com l'lSlIlg a face-plate having holes therethroug a, screen removably. supported upon' said late through I which the'airpas'ses to said ho e$, and means for opening and closing said holes. a

3. .-The' combination with a window-sash having'anaira'ssage therethrough of a ventilator secure to said sash over sai passa es and comprising a -bas e-plate having hoes ther'ethrough, a screen supported by said 5 plate through which the air passes-t0 said 6les,- and means foro'pening and closin said I holes, the sashjbeing cut to form an air-dham ber at the rear of said screen with which a passagethrough the sash communicates; v

n a'ventilator, the combinationwith a face-plate. having holes therethrough; means for opening andclosing said holes, wings proiron; said face-plate, and a screen si1p ysaidwings at the rear of the openv7 5 forwindow -sashi'th combinationwith a face- 8 5 plate ho esftherethrough, means for openih' ,an ;.closing -saidholes, wings projecting om said facelate,' a screen supported by said wings at t e rear of the openings throughthe'facelate, and afinger-lift formed integrally with t e face-plate.

' In testimony whereof I sign this specifica-- tion-in the presence of two witnesses.

ED ARD R. Fo RsTER'I 'Gno'. L. WILKINSON,

C. A. Mums 

